All-in-one combination, original standard 0KG1CH 3.5 -inch tray matched with exclusive 9W8C4 2.5 -inch adapter, compatible with both large and small size hard drives; Perfect fit for Dell 13th Gen servers including R530, R630, R730, R730XD, R930, T430, T630, also works for MD1400 and MD3400 storage enclosures; Hot swap design supports drive replacement without powering off server, front LED light clearly shows disk running state for convenient maintenance; Reinforced metal frame with hollow heat dissipation holes and shockproof structure, stable for long-term 24-hour enterprise continuous operation; Wide compatibility with all 3.5 / 2.5 inch SATA & SAS SSD and HDD, equipped with complete mounting screws for quick installation